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MakcuM [25]
2 years ago
6

Why do cells need to regulate what goes in and out of them?

Biology
1 answer:
kap26 [50]2 years ago
5 0

Answer: These molecules are essential for living things. The cell membrane controls what goes in and out by having protein channels that act like funnels in some cases and pumps in other cases. Passive transport does not require energy molecules and happens when a funnel opens in the membrane, letting molecules flow through.

Explanation: Hope this helps :)

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Which relationship is an example of commensalim?
azamat
One of the most poplar examples of commensalism is the relationship between cattle egrets and livestock. The cattle egret is a common species of heron that is found in most regions of the world, and is mostly seen moving along with herds of cattle. This bird moves about in pastures, and follows livestock such as cattle and horses.
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3 years ago
The enzyme that accomplishes transcription is termed
alekssr [168]

Answer:

The enzymes that perform transcription are called RNA polymerases. Like the DNA polymerase that catalyzes DNA replication (discussed in Chapter 5), RNA polymerases catalyze the formation of the phosphodiester bonds that link the nucleotides together to form a linear chain.

Explanation:

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Proteins are three dimensional molecules made of strands of amino acids (imagine a ball of string). There are 20 different amino
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Answer:

A series of nonpolar amino acids would most likely be located in the interior region of the tridimensional molecule.

Explanation:

Proteins are formed by linearly arranged amino acids, each with a side chain: the R-group.

Of the 20 different amino acids that compose the proteins, about half of them -10- are non-polar. Their R-groups are not stable if they are in contact with water, meaning that non-polar amino acids are hydrophobic.

When proteins are synthesized, they acquire a three-dimensional structure that makes them more stable. Lineal polypeptides get folded and turn into a shape that makes them more stable in the environment and capable of accomplishing their biological role. When they are in an aqueous media, their bent shape leaves the hydrophilic R-groups in contact with water. The hydrophilic R-groups stick in the center of the polypeptide, facing the protein interior, and avoiding interaction with water.

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Which processes of the water cycle retum water vapor<br> directly to the atmosphere?
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Answer:  the answer is evaperation :)

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Select the correct answer from each drop-down menu. the sun is the primary source of energy for ecosystems. the sun emits . when
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The scientific law of one organism feeding off other where energy is transferred from one form to another is known as the law of conservation of energy.

<h3>How the sun is the primary source of energy for ecosystems?</h3>

Energy from the highest energy source that is sun is absorbed by plants to convert it into food (i.e a form of energy). plants are the only ones that can convert sunlight into another form of energy directly.

The animals and organisms that feed off of the plants take some part of this energy for their life cycles and then the animals that feed off of these animals again take some part of this energy and carry on with their life cycle, this is how energy from sun (highest source) is transferred to different organisms by Just changing form.

Thus, The scientific law of one organism feeding off other where energy is transferred.

To learn more about primary source of energy click here:

brainly.com/question/20893934

3 0
2 years ago
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